Clint Dempsey will sit out the November friendlies due to injury. (AP Images)

Clint Dempsey and Fabian Johnson will each miss the USA's friendlies with Scotland and Austria with injuries, the U.S. Federation announced Wednesday. No replacements will be named to the roster.

Dempsey, the USA captain, strained his right calf in training on Wednesday. Johnson, who just returned to the Hoffenheim lineup after five weeks on the sideline, is still troubled by his right ankle injury, and will return to his club team.

Both players have been key members of Jurgen Klinsmann's squad in 2013. Dempsey has 10 caps and four goals this year, while Johnson has eight caps.

The U.S. faces Scotland on Friday at Hampden Park in Glasgow (3:00 p.m. ET, ESPN2 and UniMas). On Nov. 19, the team travels to face Austria at Ernst-Happel-Stadion in Vienna (2:45 p.m. ET, NBC Sports Network and UniMas).